The 12" Water Heater Connector comes equipped with high bursting, inner and outer strength. Each foot of NO-BURST contains 220 feet of stainless steel wire. Stainless ferrules are extra long with radial crimps for more security. Tough, NSF-approved polymer core resists chlorine and chloramines. Ample inside diameter for high flow capacity. Captive cone washers seal tightly, so they cannot fall out. Connector will not kink or crease, even in the tightest of spaces. Heavy-duty brass hex nuts are easy to grip and nickel plated for durability. Exceeds all requirements for flexible water connectors as defined by ASME A112.18.6 and CSA B125.